Saturated, unsaturated, and trans fats differ significantly in their chemical structure and health effects. Saturated fats, typically found in animal products, can raise LDL cholesterol and increase heart disease risk. Unsaturated fats, found in sources like nuts and olive oil, are considered healthier as they can improve cholesterol levels and reduce inflammation. Trans fats, often found in processed foods, are harmful and contribute to increased cardiovascular risks. Understanding these differences is essential for making informed dietary choices that support overall health and reduce disease risk.